CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS)
Net sales	$ 596,602	$ 164,053
Cost of goods sold	435,867	92,303
Gross profit	160,735	71,750
Operating expenses
Selling, general and administrative	145,136	62,030
Depreciation and amortization	19,351	6,061
Other operating expense, net	87,807	2,583
Total operating expenses	252,294	70,674
Operating income (loss)	(91,559)	1,076
Interest expense	(38,327)	(8,844)
Other expense (income), net	(193)	21
Total other expense	38,134	8,865
Loss before income taxes	(129,693)	(7,789)
Income tax benefit	(5,927)	(5,331)
Net loss	(123,766)	(2,458)
Net loss attributable to common stockholders	(129,910)	(7,938)
Net loss	(123,766)	(2,458)
Other comprehensive income, net of tax:
Foreign currency translation adjustment	216	492
Other comprehensive income	216	492
Comprehensive loss	$ (123,550)	$ (1,966)
Loss per common share - basic
Loss per common share - basic (in dollars per share)	$ (6.02)	$ (0.60)
Loss per common share - diluted
Loss per common share - diluted (in dollars per share)	$ (6.02)	$ (0.60)
Weighted average shares outstanding
Basic (in shares)	21,569	13,313
Diluted (in shares)	21,569	13,313